Does anyone else think it’s highly ironic that I view Wikipedia as the most up to date and reliable source of information available? Well I do…but it’s true. I trust Wikipedia the most. Anyway, the CMB. First I should give you a little background on atoms and things. Most know that atoms are made of a nucleus and some electrons that orbit them, like in the first picture. But in the early universe matter hadn’t formed into atoms yet. Things were still too hot to do that. Instead what matter there was took the form of hydrogen plasma. Ohhhh…plasma. This is what the second picture is of. In the modern age hydrogen plasma is found in stars, nuclear accelerators, lightning, neon signs and rocket exhaust. Plasma is actually considered a different state of matter…like solid, liquid and gas. A plasma is a sort of fluid where the most of the electrons has been stripped away from their atoms, or in our case they electrons were never attracted to the atoms. So what we are really left with a bunch of hydrogen nuclei. But the nucleus of a hydrogen atom is just a proton…so we just have a bunch of protons in a strange fluidly state.
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